Home > Respiratory System > Respiratory System of the Head and Neck > Larynx. The larynx is a tough, flexible segment of the respiratory tract connecting the pharynx to the trachea in the neck. It plays a vital role in the respiratory tract by allowing air to pass through it while keeping food and drink from blocking the airway.
Common side effects from nicotine gum include bleeding gums, too much saliva, hiccups, indigestion, slight swelling of the mouth, injury to teeth or cheeks, nausea, upset stomach and sore throat. Less common or rare side effects may include diarrhea, dry mouth, swollen gums, sores in the tongue/throat/mouth, muscle pain, rashes and sweating.
NEW ORLEANS â Even smokeless cigarettes may cause damage that can lead to hardening of the arteries, a new study implies. Vascular smooth muscle cells wrap around blood vessels and help control blood flow and pressure.But inflammation and chemicals, such as those found in cigarette smoke, can turn the cells into miniature drills that chew through connective tissue, allowing muscle cells to burrow into blood vessels.Once inside, the cells and other debris clump into artery-clogging plaques.Nicotine is one chemical that helps turn normal muscle cells into invaders, Chi-Ming Hai, a physiologist at Brown University in Providence, R.I., reported December 15 at the American Society for Cell Biologyâs annual meeting.ascular smooth muscle cells wrap around blood vessels and help control blood flow and pressure. But inflammation and chemicals, such as those found in cigarette smoke, can turn the cells into miniature drills that chew through connective tissue, allowing muscle cells to burrow into blood vessels.